I am trying to do CFD analysis on a cylinder with piston who will move up and down.
Attached there are some print screens.
I followed the tutorial "ball scheck valve" for the boundary conditions.
But would like to introduce a displacement expression : 30*sin(2*PI/t).
I don't arrive to introduce this kind of expression, I only find velocity in boundary conditions.
Is there an other way very easy to move this piston up and down ?
thank you very much for your help.
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